A substitute teacher is a person who teaches a school class when the teacher is unavailable; eg, because of illness, personal leave, or other reasons. “Substitute teacher” (usually abbreviated as “sub”) is the most commonly used phrase in the United States , Canada , India and Ireland , while supply teacher is the most commonly used term in Great Britain and the Canadian province of Ontario . Common synonyms for substitute teacher include teacher or teacher (used inAustralia and New Zealand ) and “emergency teacher” (used in some of the United States ).  Other terms, such as “guest teacher”, are also used by some schools or districts. Regional variants in terminology are common, such as the term teacher on call ( TOC ) in the Canadian province of British Columbia and occasional in Ontario.
Substitute teachers find jobs by local and local school district. Once approved, they will be enrolled in an automated calling system or more currently, via a system that uses the Internet to post available substituting teaching assignments. Substitutes can also find work by contacting private schools in their district. Most substitutes teachers in the US as long as possible (except for long-term substituting assignments). The substitute is responsible for following and continuing with the lesson plans left by the teacher, and to maintain student order and productivity. As with locum tenensphysicians, the idea is that continuity exists between the work done by the substitute and that done by the other professional. Substitutes work with the same students as the regular teacher does. Substitute teachers can often work in multiple schools within one district, as well as for multiple school districts.
In some regions, the qualifications for substituting teaching may be strict for a regular teacher. Most areas require a college degree , and some successful completion of competency tests; others require only that the applicant possess a high school diploma or its equivalent; full teaching qualifications are required for long-term assignments.  Long-term substitutes, which generally requires full teaching qualifications in the subject area of the class to be taught. Some school administrators may not hire full-time teachers unless they have substituted teaching experience . 
Pay and benefits
In 2015, the National Substitute Teachers Alliance has a national average salary for a teacher in the United States. US $ 20 per day ( US $ 20 per hour would be below minimum wage in any state) to US $ 190, most districts pay well below $ 100 per day. In Connecticut , for example, the typical rate in a city / town district is about $ 80 per day (or $ 11.43 per hour). A few state schools pay as much as $ 150 per day. The Alliance also reports substantial variation in benefits with some local teachers receiving some benefits while others receive sick time, retirement, or other benefits especially where a substitute teachers have a union. The comparatively lower wages for the employees of school districts are often credited to the shorter working day (6.22-7.17 hours). The length of time is roughly 15 percent longer. 
|Average US Salaries|
|Substitute Teacher (if 182 days worked)||$ 14,560|
In Australia, the rate varies between states and between sectors. In the state of Victoria, teachers in a Catholic school can earn $ 41 per hour or $ 246 per day,  while in the New South Wales public school system, teachers can earn between $ 239 and $ 327 per day depending on experience. 
In the Republic of Ireland, teachers in secondary schools are paid € 46.85 per hour for qualified teachers and € 40.85 for unqualified teachers.  In primary schools qualified teachers are paid at $ 164.26 per day. 
In Canada, substitute teachers are fully certified teachers, and are paid regular salary When employed as long-term occasional s ( LTO ), or paid a daily rate of about $ 240 to $ 300 per day.
In the United Kingdom, supply teachers employed by a local education authority or school directly in the position of a full-time basis.  Teachers employed in the UK were not subject to this rule, unless they were working for the same hiring institution for more than 12 weeks, but daily rates were generally around £ 100-125.
Substitute Educator’s Day
The United States observes a Substitute Educator’s Day , which was instituted by the National Education Association (NEA). The purpose of this day is to highlight the role and importance of the teacher by providing information, advocating for, and helping to increase appreciation and respect for this unique professional. This day also focuses on the needs of health care professionals, which includes better care and maintenance. Substitute Educator’s Day is observed on the third Friday of November during American Education Week . Other countries and jurisdictions have similar observances. [ quote needed ]
National Substitute Teacher Appreciation Week, or SubWeek, is also observed by some districts in the US and is held in May. 
- Jump up^ “What is Emergency Teacher Certification? – Blog” . 2012-04-02 . Retrieved 2017-06-29 .
- Jump up^ Requirements for Substitute Teachers by State
- Jump up^ Not Just a Body: Changing Images of the Substitute Teacher. ERIC Digest
- Jump up^ “Frequently Asked Questions” . National Substitute Teachers Alliance. 2015 . Retrieved July 26, 2015 .
- Jump up^ “Schools and Staffing Survey” . National Center for Education Statistics . 2008 . Retrieved September 6, 2017 .
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- Jump up^ Employment of Substitutes,Association of Secondary Teachers of Ireland
- Jump up^ Appointment of Substitute Teachers,Irish National Teachers’ Organization
- Jump up^ “Pay Teachers Pay, Conditions & Working Time Sept 2006 – Aug 2007″(PDF) . National Union of Teachers . 2006-05-24 . Retrieved 2006-12-28 .
- Jump up^ http://stedi.org/subm/news-and-events/national-subweek/